package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import com.sky.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import jdk.nashorn.internal.ir.RuntimeNode;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDate;
import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

//
//    @Autowired
//    private HttpServletRequest httpServletRequest;

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void add(EmployeeDTO employeeDTO) {

        //手搓一个employee对象
        Employee employee = new Employee();
        //拷贝DTO属性到employee中去
        BeanUtils.copyProperties(employeeDTO,employee);

        employee.setStatus(1);
        /*employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());*/
       // employee.setPassword("123456");
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        String token = httpServletRequest.getParameter("token");
//        Claims claims = JwtUtil.parseJWT("itcast",token);
//        Long empId = Long.valueOf(claims.get(JwtClaimsConstant.EMP_ID).toString());
      /*  employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());*/

        employeeMapper.add(employee);
    }

    /**
     * 员工分页
     * @param dto
     * @return
     */
    @Override
    public PageResult page(EmployeePageQueryDTO dto) {

        //1、分页插件设置查询第几页、每页多少条
        PageHelper.startPage(dto.getPage(),dto.getPageSize());

        //2、调用mapper
        Page<Employee> page = employeeMapper.page(dto);

        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * 更新状态
     * @param status
     * @param id
     */
    @Override
    public void updateStatus(Integer status, Long id) {


//      Employee e =new Employee();
//      e.setStatus(status);
//      e.setId(id);

        Employee e =  Employee.builder().status(status).id(id).build();

      //调用mapper ，想一鸡两吃。完成更新+完成员工状态启动or关闭
      employeeMapper.update(e);
    }

    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    @Override
    public Employee findById(Long id) {
    Employee e = employeeMapper.findById(id);
    if(e==null){
        return null;
    }
    e.setPassword("****");
        return e;
    }

    /**
     * 更新员工
     * @param dto
     */
    @Override
    public void update(EmployeeDTO dto) {

        Employee e = new Employee();
        BeanUtils.copyProperties(dto,e);
//        e.setUpdateTime(LocalDateTime.now());
//        e.setUpdateUser(BaseContext.getCurrentId());
     employeeMapper.update(e);
    }

}
